Injector for vacuum cleaning and other purposes.



E. R. HANGLITER.

INJECTOR FOR VACUUM CLEANING AND OTHER PURPOSES.

APPLICATION FILED SEPT. 15. 1911.

1,177,947. Patented A111. 4, 1916.

v fill-'G/(Zb' E '5 a UNITED STAS Firms INEIECTOR FOR VACUUM CLEANING AND OTHER PURPOSES.

Application filed September 15, 1911.

To aZ whom it may concern:

Be it known that I, EDWARD R. HANGLITER, a citizen of the United States, and a resident of the city of \Vashington, District of Columbia,have invented certain new and useful Improvements in Injectors for Vacuum Cleaning and other Purposes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to vacuum cleaning and has forits object to provide an injector which, when used in combination with the usual vacuum cleaning apparatus, will cooperate therewith in a novel manner to entrain the dust and discharge it where no further handling is necessary.

My injector has the advantage that a maximum surface of rapidly moving-water is brought into contact with the dust laden air, which is-thereby strongly. entrained and carried off with the water to a suitable place ofdischarge. In practice, the water supply is usually provided from the ordinary serv- -ice pipes when the vacuum cleaner is installed in a house or other building, the injector casing being. preferably connected with the service pipe within the cellar of the building or at any other suitable point. The dust pipe connected to theinjector casing preferably extends upward through the building and is provided on each floor with a suitable detachable connection for the usual flexible, suction tubes. The construction of the injector is such that when it is installed in the general relation specified, a comparatively high degree of vacuum is created in the suction pipe without the employment of an GXCBSSlXG water pressure, which result is primarily due to the construction and arrangement of the means for creating the water jet, the means for directing the water to the jet opening,'and the relation of the jet so formed in respect to the air chamber of the injector.

In the accompanying drawing, Figure 1 is a general diagrammatic view showing the injector as applied to a vacuum cleaning system in a house or other building. Fig. 2

is a vertical central section, on an enlarged scale, of the injector shownin Fig. 1, and Fig. 3 is a view similar to Fig. 2; but illustrating a modified construction.

Referring to the drawing, and particu- Specification of Letters Patent.

Patented AI)1'-4:, 1916.

Serial No. 649,455.

larly to Fig. 1, a section of waterpipe 10 located in the cellar and connected with the service line or main, is connected with the casing 11 of an injector A, the particular construction of which will be hereinafter .nectedin an obvious manner with one or .more flexible suction tubes b.

tube 6 is equipped with one of the usual suction nozzles 5 The "air sucked up through the tube or tubes 6 by theaction of the water passing through the injector in a manner to be hereinafter described, produces the carrying off of the dust and dirt in a downward direction through the pipe B and through the injector A, whence itpasses, together with the water from the service pipe, into a ,downwardly directed discharge pipe C leading from the bottom of the injector casing. The lower portion of the discharge pipe C is provided with a trap c or other device to conserve a vacuum in the pipe B. and it is obvious that the water pipe should be provided with a suitable valve or cock (not shown), by means of which the operation of the injector may be begun and arrested as desired.

Referring more particularly to Fig. which shows in detail the construction of the injector illustrated in Fig. 1, it will be seen that the injector casing 11 is comparatively wide at its upper part, 2'. e. where it is connected with the water pipe 10, while at its lower portion, it is of narrow elongated shape and preferably curved in the manner shown. The pipes B and C may be screwed into the top and bottom respectively of the casing, as shown, and they extend verti- Each suction cally, while the water pipe 10 extends hori zontally, zf. e. at right angles to the aforesaid pipes. \Vater delivered to the injector casing from the pipe 10 passes into a central with an opening 16, in which is secured anair deflecting plug 17, which is preferably screwed into the opening 16 in the manner Y ber 12.

preferably integral therewith.

shown. The plug 17 is preferably of conical shape and directed upwardly toward and into proximity to the inlet opening at the top of the casing, whereby the air sucked downward into the injector from the pipe B isdefiected laterally around the water cham- The airpasses downward over the outside surface of the water chamber and through the openings of the spider 14. The lower end of the water chamber or shell is provided with a comparatively small opening 18 in which is centrally located a button or disk '19 formed at the lower end of a stem 20 depending from the plug 17 and The button 19 is of cylindrical shape and forms in con nection with the opening 18 an annular discharge opening for the water jet, which I therefore assumes a hollow cylindrical shape and passes downward through the laterally restricted portion 21 of the casing, in close proximity to the walls thereof, thereby entraining the body of dusty air which has found its way into the substantially annular air chamber surrounding the water chamber.

One of the most important features of the invention is the means for directing the water downward through the injector casing in the form of a substantially cylindrical jet, whereby a maximum surface of dust entraining water is presented to the dust laden air descending in the air chamber. The jet formed by the annular opening defined between the button 19 and the bottom opening in the water chamber, passes in close proximity to the walls of tl e reduced lower portion of the injector casing, so that thereby the body of dust laden air in the outer part of the casing is sucked inwardly and downwardly, i. 6. into the descending centrally located water jet. In this manner, a high vacuum is maintained in the suction pipe B y when the apparatus is in operation, and as a consequence a maximum amount of dust is sucked into the water jet and carried off through the discharge pipe C, which preferably empties into the sewer, so that the dirty water is directly and satisfactorily disposed of. The trap c or similar device located in the discharge pipe prevents air from rising in the latter and thereby decreasing to any extent whatever the vacuum in the suction pipe. As the water inlet pipe and the discharge pipe are 'at substantially right angles to each other, the inflowing water has to turn at rightangles within the injector casing. ditions. this would produce awhirling or disturbance of the water in the water chamber such as would prejudice the formation of a homogeneous and uniform jet; but I overcome this disadvantage by placing a deflecting vane or bafiie 22 in the water chamber, preferably at the side opposite the inlet branch 15. The vane 22 may be conven- Under ordinary con-- iently mounted on the plug stem 20, with which it is preferably made integral, and it should extend practically throughout the height of the water chamber, so as to prevent any rotary or swirling movement in the latter. In this manner, the incoming water is divided into two portions and prevented from forming a swirl above the jet, where the formation of the latter in a uniform manner would be prejudiced.

I have found that in a device of this kind the air chamber surrounding the water chamber is apt tobecome clogged to a certain extent with dirt of various kinds sucked through the suction pipe. It is therefore desirable to provide some means for cleaning out the air chamber periodically, as such becomes necessary, and in order to effect this I result I have devised the following arrangement wherein the cleaning of the air chamber may be easily effected by means of a stream of water derived directly from the water supply pipe. Although there are many different ways of carrying out this idea, I have illustrated, byway of example,

- a by-pass 30 formed in the casing of the 1ninterposed. The cock may be readily 'ope'rated by means of a small hand lever 33, and when it is moved into the position shown in Fig. 2, a portion of the water entering through the pipe 10 will pass upward through the bypass 30 and thence flow downwardly in a strong current through and around the air chamber. In this manner, said chamber may be thoroughly cleared of impurities which are carried off in the water current through the discharge-pipe.

Fig. 3 illustrates a modified construction in which the water pipe and the suction pipe have a relation opposite to that previously described, that is .to say, thel water pipe 10 enters the injector casing at the top while the suction pipe B enters the casing from the side. ,In this instance, thenecessity for a deflecting vane in the casing is dispensed with, and the water fiowsdewnward directly from'the inlet pipe into a 'central water chamber 12 which may be of the water chamber. With. this construction; the 'air sucked into the casing through the suction pipe B can passfreely around the shell 13 without .any'obstru ction whatever, and it is sucked downward around the lower portion of the water chamber and into the substantially cylindrical'wa-ter jet.

- In the modification just-described the. flushingout of the air chamber may be of? fected by means of a by-pass 30 and cook 31 similar to those previously described. In this case, however, the flushing water takes an opposite course, that is, it moves, downward from the top of the water chamber into theupper portion of the air chamber.

The water. issuing from the discharge end' of the by-pass' is deflected entirely around the'air chamber by meansof a baflie 34, so that the air chamber is flushed out thoroughly over its entire cross sectional area. Of course it will be understood that I have not attempted to describe all of the various modifications of the device which may be adopted without departing from the spirit of my inventiona What I claim is 1. An injector such as described, comprising a casing divided into separate chambers, and a by-pass connectingsaid chambers, whereby one of the same may be flushed out by a portion of the fluid from the other during operation of the" injector.

2. An injector such as described, compris-' ing a casing divided'into a water chamber and an'air or'dust chamber,'and at regulable by-pass placing said chambers in communication, whereby one of the same may be flushed out by a portion of the fluid from the other during operation of the injector.

3. An injector such as described, comprising a casingyashell thereindefining a water chamber having a jet outlet, the space around the shell constituting an air chamber, a'by-pass leading from the water cham-' her to the airchamber whereby'the air chamber can be flushed out by a portion of the water from the water chamberduring operation of the injector, and a cock in said 4. A vacuum cleaning apparatus comprising a current-inducing device which consists of a chamberhaving a jet inlet with awater nozzle therein, an air inlet pipe,.an-outlet= pipe for both air and water and in line with the jet inlet, a water inlet passage, and a flushing channel encircling the upper portion. of the chamber and connected with the last mentioned passage.

5'. YA current-inducing apparatus for vacv uum cleaners consisting of a head having a jet inlet for water and an air inlet pipe, a

a water inlet connected to the channel, a

chamber secured to the bottom of the head V flushing channel at the bottom ofthe head, 

